CN108476353A - Noise isolation earphone with sound filter - Google Patents
Noise isolation earphone with sound filter Download PDFInfo
- Publication number
- CN108476353A CN108476353A CN201680077213.1A CN201680077213A CN108476353A CN 108476353 A CN108476353 A CN 108476353A CN 201680077213 A CN201680077213 A CN 201680077213A CN 108476353 A CN108476353 A CN 108476353A
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- Prior art keywords
- sound
- filter
- driving unit
- noise isolation
- hole
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
- G10K11/04—Acoustic filters ; Acoustic resonators
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1016—Earpieces of the intra-aural type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1058—Manufacture or assembly
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
- H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/02—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2884—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure
- H04R1/2888—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/025—In the ear hearing aids [ITE] hearing aids
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Otolaryngology (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Headphones And Earphones (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The present invention discloses a kind of noise isolation earphone with sound filter.The present invention the noise isolation earphone with sound filter include：Driving unit, for generating sound；Sound filter so as to ventilating air and shields external noise, also, sound filter includes for covering the dorsal pore for being formed in driving unit：Filter layer has been formed selectively through-hole and sound mobile route；Tablet forms the through-hole being selectively connected to through-hole and sound mobile route, and filter layer and tablet are alternately laminated, and the through-hole of tablet is connected to the through-hole of filter layer or sound mobile route.
Description
Technical field
The present invention relates to noise isolation technologies.More particularly, to it is a kind of have can keep earphone inner and outer
Air pressure is identical, further, it is possible to shield the noise isolation earphone with sound filter of external noise completely.
Background technology
Earphone is usually In-Ear Headphones (In-ear earphone), is listened with the state for being inserted into helix and external auditory canal
Take the sound device of sound.
Also, it inserts an earphone into external auditory canal, the gas of the inside (human pressure) and outside (atmospheric pressure) of earphone occurs
Pressure difference.That is, the eartip being formed on earphone is close to the inner wall of external auditory canal, and the air pressure of earphone inner side and outer side occurs
Difference.
But the draught head has an impact vibrating diaphragm, and there is a phenomenon where vibrating diaphragms to be tilted on the outside of earphone.
The inclination of above-mentioned vibrating diaphragm in order to prevent, in dynamic driving unit (Dynamic driver unit) and balanced armature
The rear molding of driving unit (Balanced armature driver unit) is formed with dorsal pore (Back Hole).The work(of the dorsal pore
The air pressure that earphone inner side and outer side can be to maintain is identical.Thus, it is possible to which so that vibrating diaphragm is vibrated in positive position.Also, if with mesh
The covering dorsal pore such as mutually different damper of (Mesh) density is sieved, occurs mutually different pressure difference when vibrating diaphragm starts, and incite somebody to action
It is used in tuning.
But the dorsal pore there are problems that becoming the path of input external noise.It is shielded completely with external noise in needs
Place needs to shield external noise completely for example, in order to be used on airport etc., but, because being formed in driving unit rear molding
Dorsal pore, and be difficult to shield external noise completely.
On the other hand, by loud speaker and the integrated earphone of microphone, executed to external ear by a main body (Body)
Transmit the function of the function of sound and the sound of acquisition user in road.Therefore, usual loud speaker is in order to transmit sound towards external auditory canal
Direction, and microphone is in order to acquire the sound of user, it is exposed to helix outside.But such as above-mentioned earphone, there is also by order to
The adopting sound of microphone and formed adopt sound hole input external noise, the external noise is by being formed in the dorsal pore of driving unit rear molding
The problem of inflow.On the other hand, even microphone towards external auditory canal direction In-Ear microphone (In-ear
Microphone), also with the installation site of In-Ear microphone independently, exist make because of external noise sound quality reduce
Problem.For this purpose, when will be formed in the dorsal pore closing of driving unit rear molding, above-mentioned vibrating diaphragm tilt phenomenon will occur, cause in aircraft
Internal or alpine belt can not use.
Therefore, it is necessary to a kind of rear moldings that can be prevented by being formed in dynamic driving unit and balanced armature driving unit
Dorsal pore inflow external noise, and the scheme allowed air to flow into.
Invention content
Technical problems to be solved by the inivention
The purpose of the present invention is to provide a kind of noise isolation earphone with sound filter, and drive is formed in by sound filter covering
The dorsal pore of moving cell to keep the air pressure of earphone inner side and outer side identical, while can fully shield external noise.
The technical solution solved the problems, such as
To achieve the goals above, it is preferable that the noise isolation earphone with sound filter of the invention, including：Driving is single
Member, for generating sound；And sound filter so as to ventilating air and is shielded for covering the dorsal pore for being formed in the driving unit
External noise.
The sound filter includes：Filter layer has been formed selectively through-hole and sound mobile route；Tablet is formed with choosing
The through-hole being connected to the through-hole and sound mobile route to selecting property, the filter layer and tablet are alternately laminated, the tablet
Through-hole is connected to the through-hole of the filter layer or sound mobile route.
At this time, it is preferable that the through-hole formed on the tablet adjacent with the filter layer moves road in the sound of the filter layer
The different end connections of diameter, also, the sound mobile route of adjacent filter layer is more elongated (in order to shield treble contribution, only
Bass contribution is set to pass through) it is better.
Also, sound-absorbing material is filled in the sound mobile route, the sound-absorbing material uses polyester, glass fibers
It is more than any one in dimension, mineral wool, mineral wool, polyurethane.
The effect of invention
According to the present invention, high line and alto are removed by sound filter, only so that 100Hz bassoes below pass through,
But the specification of bluetooth is to filter bass and can not pass through, and therefore, is only bypassed air through, and fully shields external noise.
On the other hand, even by the action of driving unit, and sound passes through dorsal pore against when output, also passes through sound filter
Only output 100Hz basso outputs below, and can prevent from influencing caused by the sound because generating in the inside of earphone.That is,
Even if corresponding basso is inputted to microphone (In-Ear microphone), gone from when the transmission such as bluetooth in order to reduce data volume
Except the filter sound of high line and basso, thus, it is possible to prevent the noise effect generated in the inside of earphone.
Description of the drawings
Fig. 1 is the sectional view of the noise isolation earphone with sound filter of one embodiment of the invention；
Fig. 2 is the exploded perspective view of the sound filter of one embodiment of the invention；
Fig. 3 is the enlarged drawing of the sound filter of one embodiment of the invention；
Fig. 4 is the sectional view applied to the dynamic driving unit of the present invention；
Fig. 5 is further application of the invention example, for the section view of the earphone with dynamic driving unit and In-Ear microphone
Figure；
Fig. 6 is the sectional view of the noise isolation earphone with sound filter of another embodiment of the present invention；
Fig. 7 is the sectional view applied to the balanced armature driving unit of the present invention.
Specific implementation mode
Referring to the preferred embodiment of the present invention and attached drawing, the present invention will be described in detail, and identical reference marks refers in attached drawing
Claim identical inscape.
It " includes " another inscape that some inscape is censured in detailed description of the invention or claims
When, as long as no especially opposite record, cannot be construed to only be formed by corresponding inscape, it should be understood that further include it
His inscape.
Also, in detailed description of the invention or claim, ordered with "~unit ", "~portion ", "~module ", "~block "
The inscape of name refers at least one function of processing or the unit of action, respectively passes through software or hardware or its combination
And it realizes.
Hereinafter, illustrating an example for the noise isolation earphone with sound filter for realizing the present invention by specific embodiment.
Fig. 1 is the sectional view of the noise isolation earphone with sound filter of one embodiment of the invention.
Referring to Fig.1, the present embodiment be using dynamic driving unit earphone, noise isolation earphone of the invention, including：It is dynamic
State driving unit 1；Sound filter 2, the dorsal pore for covering the rear molding for being formed in dynamic driving unit 1.
The noise isolation earphone of the present invention as constituted above will be on the inside of earphone and outer using the sound filter 2 of covering dorsal pore
The air pressure of side maintains in the same manner, further, it is possible to shield the external noise flowed by dorsal pore.
Also, it, also can be by means of sound filter 2 due to the operation of dynamic driving unit 1 when output inverse by dorsal pore sound
And only export 100Hz bassoes below.
Fig. 2 is the exploded perspective view of the sound filter of one embodiment of the invention.
Reference Fig. 2, sound filter 2 of the invention, including：Filter layer 2b, 2d, 2f have been formed selectively through-hole and sound
Mobile route l；Tablet 2a, 2c, 2e form the through-hole h being selectively connected to through-hole and sound mobile route l.
It is formed with lid 2g in outermost exterior feature.
Filter layer 2b, 2d, 2f and tablet 2a, 2c, 2e can be alternately laminated, if formed tablet 2a, 2c, 2e through-hole h and
The through-hole of filter layer 2b, 2d, 2f or the state of sound mobile route l connections.That is, the through-hole or sound of filter layer 2b, 2d, 2f
Sound mobile route l is connected to the through-hole h of adjacent tablet 2a, 2c, 2e.And, it is preferable that with any one filter layer 2b, 2d, 2f
The through-hole h formed on adjacent tablet 2a, 2c, 2e is in the different ends of the sound mobile route l of the filter layer 2b, 2d, 2f
Connection.It is self-evident, the arbitrary position in the sound mobile route l of filter layer 2b, 2d, 2f, can be formed in tablet
The through-hole h connection of 2a, 2c, 2e, the number of connection are alternatively multiple.
The sound mobile route l for being formed in filter layer 2b, 2d, 2f can have swirls, zigzag manner etc. variously-shaped.
Preferably, the sound mobile route l formed in adjacent filter layer 2b, 2d, 2f is mutually directly handed over.
Multiple mutually different sound mobile route l can be formed in filter layer 2b, 2d, 2f, road is moved with multiple sound
Diameter l accordingly, multiple through-holes can be formed on adjacent tablet 2a, 2c, 2e.
In the present embodiment, it illustrates to be formed by 3 filter layer 2b, 2d, 2f, 3 tablet 2a, 2c, 2e, 1 lid 2g
The case where, but, the composition of filter layer 2b, 2d, 2f and tablet 2a, 2c, 2e can form arbitrary combination.
On the other hand, in the present embodiment, the feelings that sound mobile route l is formed in filter layer 2b, 2d, 2f are illustrated
Condition, but also it can be formed with sound mobile route l in tablet 2a, 2c, 2e, it is formed with through-hole in filter layer.
The sound filter 2 constituted as described above is attached to the dorsal pore of dynamic driving unit 1, and is filtered through dorsal pore input and output
Sound.
Fig. 3 is the enlarged drawing of the sound filter of one embodiment of the invention.
It is formed with sound mobile route l in filter layer 2d, is formed on tablet 2c, 2e in the present invention with reference to Fig. 3
Through-hole h.
The end of the sound mobile route l of filter layer 2d is consistent with through-hole h position P1, P2 of tablet 2c, 2e, to make sound
Sound mobile route l is connected to through-hole h.
The size wide cut of sound mobile route l can be mutually different by each filter layer, the shape pair with sound mobile route l
It determines with answering.
The size of the through-hole h of tablet 2c, 2e also can be mutually different.
Polyester, glass fibre, mineral wool, mineral wool, polyurethane etc. can be used in the material of filter layer 2d, and filter layer 2d has
Sound is absorbed, prevents from echoing, prevent the functions such as vibration.
Preferably, tablet 2c, 2e is the thin plate of metal or synthetic resin, and the major function of tablet 2c, 2e are sound movements
The sealing function of path l.
Also, sound mobile route l can be used sound-absorbing material filling, sound-absorbing material that the material of above-mentioned filter layer 2d can be used
Matter.
Sound mobile route l of the sound filter 2 constituted as described above Jing Guo lateral, vertical, various configurations and most of quilt
It absorbs.That is, high line and alto are absorbed, only pass through the basso less than 100Hz.Also, dorsal pore maintains air circulation
State, and the air pressure of the inner side and outer side of earphone is maintained in the same manner.To, air circulation may make by sound filter 2,
But most external noise can be shielded.
Fig. 4 is the sectional view applied to the dynamic driving unit of the present invention.
With reference to Fig. 4, the dynamic driving unit 1 provided as an example in the present invention, including：Frame (yoke) 1a, in being in
Empty is coniform；Vibrating diaphragm 1b is vibrated in the inside of frame 1a in hollow coniform；Edge ring is around part (Edge surround)
The front end of vibrating diaphragm 1b is resiliently supported at the front end of frame 1a by 1c；Bobbin 1d is located at the rear side of vibrating diaphragm 1b, and front end side
It is fixed on the center portion of vibrating diaphragm 1b；Damper (Damper) 1e, peripheral part are fixedly supported to frame 1a, and inner peripheral portion is solid
It is scheduled on bobbin 1d；Voice coil 1f, wound on bobbin 1d；Centring disk (Spider) 1g：It is used to support voice coil 1f；Permanent magnet
1h is annularly configured at the outside of voice coil 1f；Foreboard (Front Plate) 1i, annularly, be fixedly arranged on frame 1a with forever
Between long magnet 1h；Back plate (Rear Plate) 1j, annularly, the lower part for covering permanent magnet 1h；Pole piece (Pole
Piece) 1k, annularly, between permanent magnet 1h and foreboard 1i, across the vibration for carrying out up-down vibration for bobbin 1d
Space is protruded from back plate 1j to the inside of bobbin 1d；Dust cover (Dust Cap) 1l, is configured at the center of vibrating diaphragm 1b.
The dynamic driving unit 1 constituted as described above, permanent magnet 1h, foreboard 1i, back plate 1j and pole piece 1k form magnetic circuit,
To voice coil 1f for induced current, and with magnetism, and according to the magnetic polarity of voice coil 1f, push or pull on voice coil 1f.That is, voice coil 1f and
Permanent magnet 1h is pushed when becoming identical magnetic polarity, and voice coil 1f and permanent magnet 1h are drawn when becoming mutually different magnetic polarity
It is dynamic so that voice coil 1f vibrations.When voice coil 1f vibrations, in the fixed vibrating diaphragm 1b vibrations of voice coil 1f, and sound is generated.
Also, the dorsal pore of the rear urogenesis in dynamic driving unit 1 is covered by sound filter 2, to shield
External noise, additionally it is possible to sound of the sound that shielding is generated by the action of vibrating diaphragm to the inverse output of dorsal pore.
Fig. 5 is further application of the invention example, for the section view of the earphone with dynamic driving unit and In-Ear microphone
Figure.
With reference to Fig. 5, the earphone proposed in the present invention, the center of the dust cover in the structure of the dynamic driving unit 1 of Fig. 4
Hole is formed, further includes the In-Ear microphone 4 for penetrating through the hose 3 of dynamic driving unit 1 and being arranged in hose 3.
It is separated with the output space of loudspeaker sound by means of hose 3, and makes the hollow logical of built-in In-Ear microphone 4
Road is formed in the front of loud speaker, and installation space is minimized, and thereby, it is possible to so that overall volume is minimized.
Preferably, one end of hose 3 and any one combination in back plate, pole piece, foreboard, and maintain the connection with dorsal pore
State.Also, the other end is fixed on nozzle etc..
Preferably, one end of hose 3 is covered by sound filter 2.
The previous earphone of sound filter 2 is not formed, the sound generated by the action of vibrating diaphragm passes through to the inverse output of dorsal pore
Hose 3 is flowed into In-Ear microphone 4.To which singing phenomenon occur.
But the earphone with sound filter 2 provided in the present invention, the sound generated by the action of vibrating diaphragm are inverse to dorsal pore
When output, because by sound filter 2, and only pass through the basso less than 100Hz.
Also, it is formed with bluetooth communication and the wireless headset of DSP, in order to carry out Wireless transceiver, executes and reduces data
The filtering of amount removes high line and basso.That is, by the action of vibrating diaphragm to the basso less than 100Hz of the inverse output of dorsal pore,
It is completely removed in the filter process to carry out Wireless transceiver, therefore, the noise quilt actually inputted to In-Ear microphone 4
It completely removes.
Fig. 6 is the sectional view of the noise isolation earphone with sound filter of another embodiment of the present invention.
With reference to Fig. 6, the present embodiment is the earphone about application balanced armature driving unit, noise isolation ear of the invention
Machine, including：Balanced armature driving unit 5；Sound filter 2, the back of the body for covering the rear molding for being formed in balanced armature driving unit 5
Hole.
The noise isolation earphone of the present invention constituted as described above, using the sound filter 2 of covering dorsal pore by the inside of earphone and
The air pressure in outside maintains in the same manner, meanwhile, shield the external noise flowed by dorsal pore.
Also, by means of the operation of balanced armature driving unit 5, even if only passing through if when output inverse by dorsal pore sound
2 output 100Hz bassoes below of sound filter.
Fig. 7 is the sectional view applied to the balanced armature driving unit of the present invention.
With reference to the balanced armature driving unit 5 that Fig. 7, an example as the present invention are provided, including：Frame 5a；It is a pair of permanent
Magnet 5b is spaced from each other and is arranged in frame 5a；Yoke plate 5c, for covering permanent magnet 5b；Armature 5d, one side across
Between permanent magnet 5b, the other side is fixed on frame 5a air gap (Air gap)；Coil 5e, wound on the one of armature 5d
Portion, and form alternating current magnetic field between armature 5d and permanent magnet 5b；Connecting rod 5f is connected to armature 5d；Vibrating diaphragm 5g, with
Connecting rod 5f connections and vibrate, supported by frame 5a.
Frame 5a can be formed with the outer shape of lineal hexahedral, but, the outer shape of frame 5a is not limited to this.Frame
5a can be made of hard materials such as aluminium or hard resins.
A pair of permanent magnets 5b is spaced from each other and forms D.C. magnetic field, is made of upper magnet and lower magnet.
Yoke plate 5c is formed to constitute the closed circuit including upper magnet and lower magnet.That is, passing through top magnetic
Certain magnetostatic field (static magnetic field) occurs for iron and lower magnet, for the back haul link of magnetostatic field
(return path) is limited by yoke plate 5c.To which yoke plate 5c is formed by the material of magnetic higher high magnetic susceptibility.
One end of armature 5d is between a pair of permanent magnets 5b spaced apart from each other.The opposite of one end is reversely other end shape
At the warp architecture for the shape being bent to upper direction, and it is fixed on frame 5a.The warp architecture of the other end can be with various shapes
State deforms, and can be fixed on the structure of frame 5a, i.e., any form can all be applied.Pass through the warp architecture of the other end so that whole
Height reduce, and reduce volume.Armature 5d can punching press (stamp out) metal strip and formed.Metal strip is easy one end is curved
It is bent.Armature 5d may include ferrosilicon material or other materials such as existing magnetic material, the silicon steel such as permalloy (or ferronickel permeability alloys)
Expect and constitutes.Armature 5d can be formed by the material of magnetic higher high magnetic susceptibility.Armature 5d between permanent magnet 5b can
Air gap (air gap) is formed between permanent magnet 5b and armature 5d.
Coil 5e is around a part of armature 5d, when applying signal code, to armature 5d generation fluxs, and
Alternating current magnetic field is formed between armature 5d and permanent magnet 5b.
Connecting rod 5f can be formed by the non magnetic material with rigidity.
Such as balanced armature driving unit 5 of above-mentioned composition, when applying signal code to coil 5e, by being sent out in armature 5d
Raw flux and the alternating current magnetic field formed between armature 5d and permanent magnet 5b and the direct current formed between permanent magnet 5b
When magnetic field is overlapped so that armature 5d is occured bending and deformation by upper and lower directions.To be connected to the connecting rod 5f of armature 5d in upper and lower
To being subjected to displacement (displacement).Also, the displacement of connecting rod 5f is transferred into the vibrating diaphragm 5g for being fastened on end thereon,
And make diaphragm oscillations, sound occurs.The sound of generation is discharged by nozzle to outside, and the ear of user is finally transferred into.
Also, the dorsal pore of the rear urogenesis in balanced armature driving unit 5, is covered by sound filter 2, thus, it can not only
Enough shield external noise, additionally it is possible to sound of the sound that shielding is generated by the action of vibrating diaphragm 5g to inverse output.
On the other hand, balanced armature driving unit 5 and In-Ear microphone can be mounted on a cassette interior, passed through
The output space of hose and loudspeaker sound separates, and In-Ear microphone is disposed in inside hose.It can apply substantially the samely
Therefore function illustrated in fig. 5 omits repeated explanation.
The technological thought of the present invention is illustrated by above several embodiments.
The those of ordinary skill of the technical field of the present invention can by the specified particular of the present invention embodiment that illustrates into
Row various modifications or change.Although also, not yet explicitly illustrate or illustrate, the those of ordinary skill of technical field of the invention can
Specified particular according to the present invention carry out include the present invention technological thought various forms deformation, still fall within the present invention
Interest field.The above embodiments being described with reference to are described in order to illustrate the present invention, and interest field of the invention is simultaneously
It is not limited to the above embodiments.
Claims (11)
1. a kind of noise isolation earphone with sound filter, which is characterized in that including：
Driving unit, for generating sound；And
Sound filter so as to ventilating air and shields external noise for covering the dorsal pore for being formed in the driving unit.
2. the noise isolation earphone according to claim 1 with sound filter, which is characterized in that
The sound filter includes：
Filter layer has been formed selectively through-hole and sound mobile route；And
Tablet forms the through-hole being selectively connected to the through-hole and sound mobile route.
3. the noise isolation earphone according to claim 2 with sound filter, which is characterized in that
The filter layer and tablet are alternately laminated, and the through-hole of the tablet and the through-hole or sound mobile route of the filter layer connect
It is logical.
4. the noise isolation earphone according to claim 3 with sound filter, which is characterized in that
The through-hole formed on the tablet adjacent from the filter layer connects in the different ends of the sound mobile route of the filter layer
It is logical.
5. the noise isolation earphone according to claim 3 with sound filter, which is characterized in that
The sound mobile route of adjacent filter layer is mutually directly handed over.
6. the noise isolation earphone according to claim 2 with sound filter, which is characterized in that
Sound-absorbing material is filled in the sound mobile route.
7. the noise isolation earphone according to claim 6 with sound filter, which is characterized in that
The sound-absorbing material using polyester, glass fibre, mineral wool, mineral wool, any one in polyurethane more than.
8. the noise isolation earphone according to claim 1 with sound filter, which is characterized in that
The driving unit is dynamic driving unit or balanced armature driving unit.
9. the noise isolation earphone according to claim 8 with sound filter, which is characterized in that
The dynamic driving unit includes：
Frame, in hollow coniform；
Vibrating diaphragm is vibrated on the inside of the frame in hollow coniform；
The front end of the vibrating diaphragm is resiliently supported at the front end of the frame by edge ring around part (Edge surround)；
Bobbin is located at the rear side of the vibrating diaphragm, and front end side is fixed on the central part of the vibrating diaphragm；
Damper (Damper), peripheral part are fixedly supported on the frame, and inner peripheral portion is fixed on the bobbin；
Voice coil, on the bobbin；
Centring disk (Spider), supports the voice coil；
Permanent magnet is annularly configured at the outside of the voice coil；
Foreboard (Front Plate) is annularly fixedly arranged between the frame and the permanent magnet；
Back plate (Rear Plate), annularly, the lower part for covering the permanent magnet；
Pole piece (Pole piece) annularly between the permanent magnet and foreboard, is carried out across for the bobbin
The oscillation space of up-down vibration is protruded from the back plate to the inside of the bobbin；And
Dust cover (Dust Cap) configures in the center of the vibrating diaphragm.
10. the noise isolation earphone according to claim 8 with sound filter, which is characterized in that
The balanced armature driving unit includes：
Frame；
A pair of permanent magnets is spaced from each other and is arranged in frame；
Yoke plate, for covering the permanent magnet；
Armature, across air gap (Air gap) between the permanent magnet, the other side is fixed in the frame for one side；
Coil forms alternating current magnetic field around a part for the armature between the armature and the permanent magnet；
Connecting rod is connected to the armature；
Vibrating diaphragm connect with the connecting rod and is vibrated, and is supported by the frame.
11. the noise isolation earphone according to claim 9 or 10 with sound filter, which is characterized in that including：
Hose, for being separated with the output space of the sound generated from driving unit；And
Microphone is mounted in the hose.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2015-0189237 | 2015-12-30 | ||
| KR20150189237 | 2015-12-30 | ||
| KR10-2016-0009804 | 2016-01-27 | ||
| KR1020160009804A KR101756653B1 (en) | 2015-12-30 | 2016-01-27 | Noise shielding earset with acoustic filter |
| PCT/KR2016/013990 WO2017116023A1 (en) | 2015-12-30 | 2016-11-30 | Noise shielding earset having acoustic filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108476353A true CN108476353A (en) | 2018-08-31 |
| CN108476353B CN108476353B (en) | 2021-06-08 |
Family
ID=59355599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680077213.1A Expired - Fee Related CN108476353B (en) | 2015-12-30 | 2016-11-30 | Noise shielding earphone with sound filter |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10764673B2 (en) |
| JP (1) | JP6649488B2 (en) |
| KR (1) | KR101756653B1 (en) |
| CN (1) | CN108476353B (en) |
| DE (1) | DE112016006136T5 (en) |
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|---|---|---|---|---|
| US11102567B2 (en) | 2016-09-23 | 2021-08-24 | Apple Inc. | Foldable headphones |
| WO2019100081A2 (en) | 2017-11-20 | 2019-05-23 | Apple Inc. | Headphones |
| DE202018107123U1 (en) * | 2017-12-30 | 2019-01-08 | Knowles Electronics, Llc | Electroacoustic transducer with improved shock protection |
| KR102414633B1 (en) | 2018-04-02 | 2022-06-30 | 애플 인크. | headphone |
| KR102053263B1 (en) * | 2018-09-12 | 2019-12-06 | 이근형 | Earphone having structure for improving quality of sound |
| KR102505133B1 (en) * | 2021-11-22 | 2023-03-02 | 부전전자 주식회사 | Audio filter |
| US11659337B1 (en) | 2021-12-29 | 2023-05-23 | Knowles Electronics, Llc | Balanced armature receiver having improved shock performance |
| KR20230151817A (en) * | 2022-04-26 | 2023-11-02 | 삼성전자주식회사 | Sound outputting apparatus |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR101756653B1 (en) | 2017-07-17 |
| US10764673B2 (en) | 2020-09-01 |
| DE112016006136T5 (en) | 2018-09-06 |
| JP2018538757A (en) | 2018-12-27 |
| CN108476353B (en) | 2021-06-08 |
| JP6649488B2 (en) | 2020-02-19 |
| US20190007768A1 (en) | 2019-01-03 |
| KR20170080388A (en) | 2017-07-10 |
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